The three times Qianling Mausoleum had been robbed were as follows: The first robbery occurred during the Huangchao Uprising at the end of the Tang Dynasty. After Huang Chao led 400,000 troops into Chang 'an, they excavated Liangshan near Qianling, but they did not find the entrance to the tomb, leaving only a 40-meter-deep ditch. The second excavation took place during the Five Dynasties and Ten Kingdoms period, led by Chongzhou Jiedushi Wen Tao. Wen Tao excavated Qianling Tomb three times in a row, but every time he encountered abnormal weather such as wind, rain, thunder, and lightning, which made him feel afraid and finally gave up the idea of continuing to excavate. The third excavation took place in the early years of the Republic of China. Sun Lianzhong, the general of the National Party, used a military exercise as a cover to mobilize a division to excavate Qianling. Sun Lianzhong used explosives to blow up the three stone slabs outside Qianling Mausoleum, but he did not find the entrance to the tomb. The above was the process of Qianling being robbed three times.
At present, there was no conclusive evidence to prove that Qianling Tomb had been robbed. Qianling Mausoleum was the most well-preserved imperial tomb of the Tang Dynasty. Its underground palace had not been excavated, so it was impossible to determine its internal situation. Although some folklore and archaeological research results suggested that Qianling Mausoleum might have been robbed, these claims had not been confirmed. Therefore, there was no clear answer to the question of whether Qianling Tomb had been robbed.
There were a few main reasons why Qianling Mausoleum was not robbed. First of all, the Qianling Mausoleum was built in the middle of the mountain so that the tomb path would not be easily discovered. In addition, the outside of the tomb path was reinforced and sealed with stones, making the structure around the tomb path firm. Tomb robbers could not dig holes, so it was more difficult to dig. Secondly, the tomb path of Qianling Mausoleum was sealed with stone strips. The stone strips were pulled with iron bolts or iron rods, and the seams were cast with white iron to connect the stone strips into one. Although the stone strips on the upper level of the middle section of the catacomb were moved and damaged, the upper and lower sections were intact. In addition, no new burrows were discovered during the exploration of Qianling. Finally, although the sealing stone of the Qianling Underground Palace was incomplete and damaged, it was very likely that it was left behind when Wu Zetian was buried. Therefore, many experts believed that Qianling Mausoleum was the only one among the eighteen mausoleums in Guanzhong of the Tang Dynasty that had not been stolen.
There were several main reasons why Qianling Tomb was not robbed. First of all, the Qianling Mausoleum was built in the middle of the mountain so that the tomb path would not be easily discovered. In addition, the outside of the tomb path was reinforced and sealed with stones, making the structure around the tomb path firm. Tomb robbers could not dig holes, so it was more difficult to dig. In addition, the underground palace of Qianling Mausoleum was dug in the middle of the stone mountain. It was also very difficult to abandon the tomb path and dig a new hole to enter the underground palace. In addition, according to the analysis of the current situation of the exploration and trial excavation, no new holes were found in the tomb passage and the stone sealing part of Qianling Mausoleum, and the stone strips of the tomb passage were basically intact. Therefore, from the historical records and field archaeological investigation, it can be concluded that Qianling Tomb was the only tomb that had not been stolen among the eighteen tombs in Guanzhong during the Tang Dynasty.
Qianling Mausoleum was open. According to document 1 and document 2, Qianling Tomb was open from 08:00 to 18:00 during the peak season from March to November, and from 08:30 to 17:30 during the off-season from December to February of the following year. Therefore, Qianling Tomb was open to the public.
We can't conclude that Qianling Tomb has been robbed long ago. Literature [1] pointed out that Qianling was not stolen, this was just a folk legend. Literature [2] also mentioned that Qianling Tomb was the only one among the eighteen tombs of the Tang Dynasty that had not been robbed. In addition, literature [3] and literature [5] also mentioned that Qianling was the only imperial tomb that had not been stolen. Although Literature [6] and Literature [9] mentioned that Qianling had experienced some grave robbing incidents, they did not clearly state that Qianling had been robbed. Therefore, we can't confirm that Qianling Mausoleum has already been robbed.
The Qianling Underground Palace had not been opened yet. The Qianling Mausoleum was the most well-preserved of the Tang mausoleums, and it was also the only mausoleum in the Tang mausoleum that had not been robbed. Qianling Mausoleum was built in the first year of Tang Guangzhai (684) and has not been opened yet. Although some people hoped that Qianling could be opened, the current cultural relics protection technology could not guarantee the complete preservation of cultural relics. Therefore, the Qianling Underground Palace remained closed.
There were different opinions on whether the mausoleum of Qin Shihuang had been robbed. On the one hand, some people believed that Qin Shihuang's mausoleum had been robbed on a large scale, including the Red Eyebrow Uprising Army at the end of the Eastern Han Dynasty, the rulers of the Later Zhao period of the Wei and Jin Dynasties, Schleswig and Shi Jilong, and the Huangchao Uprising Army at the end of the Tang Dynasty. On the other hand, there were also people who believed that Qin Shihuang's mausoleum had not been robbed because no one had entered the underground palace so far. According to the records, the underground palace of Qin Shihuang's mausoleum might not have been stolen, but the two bronze chariots and horses that had been unearthed were located in the ear room of the western tomb passage under the underground palace. In addition, archaeologists had carried out detailed drilling work around the sealed soil of Qin Shihuang's mausoleum. They found palace walls around the underground palace and found a tunnel leading to the underground palace. The soil in the tunnel showed no signs of man-made disturbance. However, there was no definite information about whether the cultural relics in the mausoleum of Qin Shihuang were intact. Overall, there was no conclusion as to whether the tomb of Qin Shihuang had been stolen.
[Yes, Yang Xun's market has been snatched away.] In document 1, Yang Xun called Liang Sishen and told her that his mall had been snatched away. The second document also mentioned that Yang Xun had lost the mall. In addition, document 4 described how the market was robbed and Yang Xun was injured. Therefore, it could be confirmed that Yang Xun's market had indeed been snatched away.
At present, there was no conclusive evidence that Yang Yuhuan's tomb had been robbed or destroyed. Although there were some rumors that Yang Yuhuan's tomb might have been stolen or destroyed, these claims had not been confirmed. Therefore, we can't be sure if Yang Yuhuan's tomb was robbed.
[Li Shimin's Zhaoling Tomb was indeed robbed.] According to many documents, including the New History of the Five Dynasties and the Old History of the Five Dynasties, as well as other relevant information, the famous tomb robber Wen Tao stole Li Shimin's tomb at the end of the Tang Dynasty and looted the gold, silver, jewelry, and cultural relics. In addition, Wen Tao also excavated the underground palace of the Zhaoling Mausoleum, causing serious damage to the tomb. Therefore, it was certain that Li Shiming's imperial tomb had been robbed.